Seiko Cal. 4428 - 705

This Hand-Winding model from 1972 features a 40mm Stainless Steel case. Powered by the 4428 caliber with 24j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-43212a70782c]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1972

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